Add X-UA-Compatible meta tag
authorJohn Firebaugh <john.firebaugh@gmail.com>
Thu, 14 Nov 2013 18:17:27 +0000 (10:17 -0800)
committerJohn Firebaugh <john.firebaugh@gmail.com>
Thu, 14 Nov 2013 18:17:27 +0000 (10:17 -0800)
Rails 4 removed the `BestStandardsSupport` middleware, because
supposedly a HTML5 doctype accomplishes the same thing. But not
quite -- without X-UA-Compatible, the UI for changing compatibility
mode is still visible, and users can get themselves into a bad state
(see https://github.com/openstreetmap/openstreetmap-website/pull/498#issuecomment-28483550)


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